Roller screen



y ,1929. H. w. VALENTINE 1,712,594

ROLLER SCREEN Filed Aug. '6, 1927 Patented May 14, 1929.

. stares PA HARRY W. VALENTINE, OF OAKLAND, CALIFORNIA.

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Application filed August 6, 1927. fierial No. 211,0'32.

This invention relates to the class of screens and pertains particularlyto a spring controlled window screen.

Tl'ie present invention has for one of its objects to provide. in amanner as hereinafter set forth, a window screen which can beconveniently rolled into a protective casing at the top of a windowuntil ready for further use. 7

Another object of the present invention is to provide a rolling windowscreen employing an improved means for securing the control spring tothe screen carrying cylinder.

Eltill another object is to provide, in a m an nor as hereinafter setforth, an improved means for mounting a control spring upon a screencylinder supporting shaft.

Numerous other objects and advantages of the present invention willbecome apparent as the description proceeds and the same will be bestunderstood from a consideration of the following detailed descriptiontaken in connection with the accompanying drawings forming a part ofthis invention, with the understanding, however, that the invention isnot confined to any strict conformity with the showing of the drawingsbut may he changed or modified. so 'long as such changes ormodifications mark no material departure from the salient features ofthe invention as expressed in the appended claims.

Tn the drawings:

Fig. l is a longitudinal section through the roller screen structure.

Fig. 2 is a detailed sectional View through the screen roller cylinder.

Fig. 3 is a section taken on the line 3 3 of 2.

Referring now to the drawings in detail, an elongated casin g 2 ofsubstantially semicylindrical cross sectional design houses the rollerstructure. The ends of the casing are closed by the end caps 4 and 5each of which is provided with the flange 4L and 5 forfacilitatingsecuring the device in position.

A. screen roller cylinder 6 is positioned in the casing 2 and is mountedupon the shaft 7, one end of which is reduced and squared as at 8 andengages in a square hole 9 formed in the cap t and by reason of this isheld against rotation. The opposite end of the shaft is engaged in thecap 5 as shown. Upon the squared end 8 is mounted a looking disc 10which disc is provided upon its periphery with a notch 10.

A portion of the shaft adjacent the squared end 8 is reduced as at 11,being slightly larger than the end 8, and upon the portion 11 acone-like spool 12 mounted, the larger end or base portion bearingagainst a cupped end piece 14-, and the inner or smaller end bearingagainst the shoulder 13 formed at the inner end of the reduced portion11. The base portion of the spool 12 has an annular lip 15 formedconcentrically thereon which is swaged over after being extended throughthe member 14.- to maintain the spool and this member in looseconnection. The end piece 14, as shown closes one end of the cylinder 6,the flange of the piece being directed outwardly. The other end of thecylinder is closed by a similar member 14".

Surrounding the shaft 7 is a relatively long coil spring 16 of the typeusually employed in shade rollers, one end of the spring extending overand engaging the tapered spool 12. This spool acts to prevent the springwhen tightened, from binding upon the shaft, and the end of the springupon the spool is engaged through the hole 17 in the adjacent end piece.

The cylinder 6 is rolled from a fiatisheet as will be readily understoodand the longitudinal edges are secured together by forming a locked seamas indicated at 18 and each end edge of the cylinder is bent inwardlyover the flange of the adjacent piece, a notch 20 being cut into theedge of the end piece to receive the seam of the cylinder, thus lockingthe end pieces 1% and let in the cylinder, as will be readily understoodfrom a consideration of Figs. 4 and 5.

Upon the outer face of the end piece 14 is secured a pawl 22 whichengages the notch 10 of the disc 10, thus locking the cylinder againstrotation after the spring 16 has been tightened. Manipulation of thepawl 22 for rolling or unrolling the cylinder is accomplished by theinsertion of a suitable instrument through the aperture 23 in the endcap 4:.

Having thus described my invention, what I claim is:

1. In a roller screen structure of the character described, a fixedshaft, a cylinder for carrying a screen fabric rotatably mounted uponsaid shaft, a spiral spring surrounding said shaft, one end of saidspring being fixed to the rotatable cylinder and the other end to theshaft, a tapered member mounted at one end of the shaft, said memberbeing rotatable with respect to the shaft and t0 the spring, and meansfor preventing longitudinal movement of the tapered member along y theshaft.

2. In a roller screen structure of the character described, a fixedshaft, a cylinder for carrying a screen fabric rotatably mounted uponsald shaft, a spiral spring surrounding nal displacement and beingrotatable relative to the spring, and to the shaft.

In testimony whereof I aflix my signature.

HARRY \V. VALENTINE.

